diff --git a/src/etc/inc/filter_log.inc b/src/etc/inc/filter_log.inc
index f294b006a9..5262192364 100644
--- a/src/etc/inc/filter_log.inc
+++ b/src/etc/inc/filter_log.inc
@@ -83,7 +83,7 @@ function conv_log_filter($logfile, $nentries, $tail = 50, $filtertext = "", $fil
 
 	# Construct RegEx for specific log file type.
 	if ($logfile_type == 'firewall') {
-		$pattern = "filterlog";
+		$pattern = "filterlog\[[0-9]+\]:";
 	}
 	else if ($logfile_type == 'system') {
 		$pattern = "^" . $date_pattern . "\ +" . $host_pattern . "\ +" . $process_pid_pattern . "\ +" . $log_message_pattern . "$";